Method for extracting nitraria seed oil from subcritical fluid

A subcritical fluid and Nitraria seed technology, which is applied in the direction of fat oil/fat production and fat generation, can solve the problems of long extraction time, long pressing time of mechanical pressing method, and large solvent consumption, so as to reduce solvent consumption and Energy consumption, shortened extraction and separation time, good safety and repeatability

Inactive Publication Date: 2012-06-20
CHINA ACAD OF SCI NORTHWEST HIGHLAND BIOLOGY INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The mechanical pressing method has long pressing time, low oil yield, high impurity content, poor oil quality, and darker color; the organic solvent extraction method has long extraction time, low efficiency, large solvent consumption, and easy to cause solvent residue in the product and a series of disadvantages; while supercritical fluid extraction has high requirements for equipment, complex process, small equipment volume, high cost, and high energy consumption, so it is not suitable for large-scale industrial continuous production

Method used

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  • Method for extracting nitraria seed oil from subcritical fluid

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Effect test

Embodiment 1

[0022] Embodiment 1 A method of subcritical fluid extraction of Nitraria japonica seed oil, comprising the following steps:

[0023] (1) The seeds obtained after squeezing fresh and clean Nitraria fruit are dried in the shade at room temperature, sorted, crushed, and passed through a 20-mesh sieve to obtain Nitraria seed raw material.

[0024] (2) The Nitraria seed raw material was rolled at 30° C. for 60 minutes and then dried for 8 hours to obtain treated Nitraria seeds.

[0025] (3) The processed Nitraria thorn seeds and extractant—propane are put into the extraction kettle of the subcritical fluid extraction device according to the mass-volume ratio (g / mL) of 1:1, and the extraction temperature is 5° C. Under the condition that the pressure is 0.15MPa and the flow rate of the extractant is 10L / h, the extract is continuously extracted once, each time for 10min, to obtain the extract.

[0026] (4) Using the method of decompression and heating, the extract is separated under...

Embodiment 2

[0028] Embodiment 2 A kind of subcritical fluid extracts the method for Nitraria japonica seed oil, comprises the following steps:

[0029] (1) The seeds obtained after squeezing fresh and clean Nitraria fruit are dried in the shade at room temperature, sorted, crushed, and passed through a 60-mesh sieve to obtain Nitraria seed raw material.

[0030] (2) The Nitraria seed raw material was rolled at 70° C. for 10 minutes and then dried for 3 hours to obtain treated Nitraria seeds.

[0031] (3) The Nitraria thorn seeds after treatment and the extractant——dimethyl ether are put into the extraction kettle of the subcritical fluid extraction device at a material-solution mass-volume ratio (g / mL) of 1:8, and the extraction temperature is 55° C. , extraction pressure is 0.35MPa, extraction agent flow rate is 40L / h under the conditions of continuous extraction 10 times, each 90min, to obtain the extract.

[0032] (4) Using the decompression and heating method to separate the extract ...

Embodiment 3

[0034] Embodiment 3 A kind of subcritical fluid extracts the method for Nitraria japonica seed oil, comprises the following steps:

[0035] (1) The seeds obtained after squeezing fresh and clean Nitraria fruit are dried in the shade at room temperature, sorted, crushed, and passed through a 40-mesh sieve to obtain Nitraria seed raw material.

[0036] (2) The Nitraria seed raw material was rolled at 62° C. for 30 minutes and then dried for 5 hours to obtain treated Nitraria seeds.

[0037] (3) The treated Nitraria thorn seeds and extractant—butane are put into the extraction kettle of the subcritical fluid extraction device at a material-solution mass-volume ratio (g / mL) of 1:5, and the extraction temperature is 45° C. Under the conditions of extraction pressure of 0.52MPa and extractant flow rate of 70L / h, continuous extraction was carried out for 6 times, 40min each time, to obtain the extract.

[0038] (4) Using the method of decompression and heating, the extract is separa...

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Abstract

The invention relates to a method for extracting nitraria seed oil from subcritical fluid. The method comprises the following steps of: (1) squeezing juice of fresh and clean nitraria fruit, drying the obtained seed at room temperature in the shade and sequentially carrying out sorting, crushing and sieving to obtain nitraria seed raw materials; (2) milling and baking the nitraria seed raw materials to obtain treated nitraria seed; (3) carrying out continuous extraction through putting the treated nitraria seed and extracting agents into an extraction kettle of a subcritical fluid extraction device to obtain extracts; and (4) using a pressure reduction temperature rise method for separating the extracts to obtain extraction liquid and carrying out still standing on the extraction liquid at room temperature to obtain the nitraria seed oil. After the method is adopted, the production cost is effectively reduced, the extraction and separation time is shortened, the solvent consumption and the energy consumption in the technical process are reduced, in addition, the technical flow process is simple, the operability is high, the extraction efficiency is high, the environment is protected, the pollution is avoided, the safety and the repeatability are good, and the large-scale industrial continuous production can be realized.

Description

technical field [0001] The invention relates to the technical field of vegetable oil extraction, in particular to a method for subcritical fluid extraction of Nitraria japonica seed oil. Background technique [0002] Nitraria is a xeric or super-xerotic typical desert plant of the family Zygophyllceae. It has strong stress resistance, drought and saline-alkali tolerance, and can adapt to high temperature and low cold. It is naturally distributed in dry, saline-alkali, windy, In the harsh environment with sparse vegetation, it is an excellent shrub for windbreak and sand fixation in Northwest my country (Li Bihua, Xing Shangjun. Nitraria and its development and utilization [J]. Shandong Forestry Science and Technology, 1994, (3): 7-12). There are about 40,000 to 50,000 hectares of natural and planted Nitraria forests distributed in the Qaidam Basin of Qinghai, with an annual output of 70,000 to 120,000 tons of Nitraria fresh fruit. Nitraria tangutorum Bohr. is the most widely...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/04C11B1/10C11B1/00
Inventor 邵赟陶燕铎刘增根毕宏涛于瑞涛陈晨党军江磊张琳
Owner CHINA ACAD OF SCI NORTHWEST HIGHLAND BIOLOGY INST
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